Project management costs adopt the mode of comprehensive unit price of fixed labor days and provisional total price offer in the light of working range.
工程项目管理费根据工作范围采用固定人工日综合单价、暂定总价报价方式。
The model incorporates fixed costs of locating RDCs, working inventory and safety stock inventory costs at RDCs and transport costs from the suppliers to the RDCs.
模型中的目标成本包括：rdc的设立成本、RDC成本、RDC安全库存成本以及从rdc到分销商的配送成本四部分。
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